- Patients must also have measurable disease, defined as at least one lesion that can be accurately measured in at least one dimension; disease X-rays, scans or physical examinations used for tumor measurement must have been completed within 28 days prior to registration; if there is clinical suspicion for bone metastases at the time of enrollment (at the discretion of the investigator), bone scan should be performed at baseline (within 42 days prior to registration); all disease must be assessed and documented on the Baseline Tumor Assessment form